const Koa = require('koa')
const app = new Koa()
const views = require('koa-views')
const json = require('koa-json')
const onerror = require('koa-onerror')
const bodyparser = require('koa-bodyparser')
const logger = require('koa-logger')
const log4js =require('./utlis/log4')
const MongoConnect = require('./db')
const cors = require('koa2-cors')
const koajwt=require('koa-jwt')
const index = require('./routes/index')
const users = require('./routes/users')
const menus =require('./routes/menus')
//解决跨域问题
app.use(cors({
  origin: (ctx) => {
     const origin = ctx.headers.origin  // 实际生产请根据具体情况来进行规则配置
     return origin
  }
}))
// 启动数据库
MongoConnect()

// error handler
onerror(app)

// middlewares
app.use(bodyparser({
  enableTypes:['json', 'form', 'text']
}))

app.use(async (ctx,next)=>{
  log4js.info(`get params:${JSON.stringify(ctx.request.query)}`)
  log4js.info(`post params:${JSON.stringify(ctx.request.body)}`)

  await next().catch((err=>{
    if(err.status == '401'){
     ctx.status ='200',
     ctx.body ={
       code:50001,
       msg:'token 验证失败！'
     }
    }else{
      console.log('======>',err)
      throw err
    }
  }))
})

//  token权限过滤
app.use(koajwt({secret:'hyhadmin'}).unless({
  path: [/^\/users\/login/,/^\/users\/reg/,/^\/users\/add/]})
)

app.use(json())
app.use(logger())
app.use(require('koa-static')(__dirname + '/public'))

app.use(views(__dirname + '/views', {
  extension: 'pug'
}))

// logger
app.use(async (ctx, next) => {
  const start = new Date()
  await next()
  // log4js.info('log ouput')
  const ms = new Date() - start
  console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})

// routes
app.use(index.routes(), index.allowedMethods())
app.use(users.routes(), users.allowedMethods())
app.use(menus.routes(), menus.allowedMethods())
// error-handling
app.on('error', (err, ctx) => {
  // console.error('server error', err, ctx)
});

module.exports = app
